Crappie fishing is the best fishing, but I am growing very dissapointed in the delta, I have fished by boat, bank under bridges around boat docks every place my fishing experience says cast too I try it. I learned to crappie fish in Ohio as a kid, we would fish under bridges and near downed trees for crappie but that was in the early 1970's, I spent time in the Navy and was stationed in Illinois and would catch crappie near bursh piles fallen trees near boat docks, I moved to Texas and would fish for Crappie at night almost any lake would yeild good numbers just find the depht. I have good fishing skills but my location must suck in the Delta. I have had good success in the lakes I caught my biggest Crappie ever here in California 4lbs a 16 incher. In Texas they would call it a bondo ( barn door) slab. Any advice on locations and seasonal patterns of the Delta Crappie. I do know that california fishermen/women are very tight lipped about fishing holes and will avoid location infomation when possible, trust me I do understand your location infomation in the hands of the wrong person can lead to disaster for years to come. One year I created a stake bed with X-mas tree branches at a lake in Santa Clara, It worked like a charm Crappie were in that hole I brought a friend along we both limited out in about 1.5 hours, he told 1 person and the next time I went there over 10 people were in the exact location of my stake bed, all from the same neighborhood. I did have a back-up and it was also very productive. I know the delta is large and there are concentration of crappie somewere. attached is a picture of my 16 in crappie its big I am 230lbs